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Applied Optics

Applied Optics


  • Vol. 43, Iss. 27 — Sep. 20, 2004
  • pp: 5162–5167

Wavelength response of waveguide volume grating couplers for optical interconnects

Ricardo A. Villalaz, Elias N. Glytsis, Thomas K. Gaylord, and Tsuyoshi Nakai  »View Author Affiliations

Applied Optics, Vol. 43, Issue 27, pp. 5162-5167 (2004)

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The wavelength response of a waveguide volume grating coupler (WVGC) is analyzed for coupling light from a slab waveguide into the superstrate. A leaky-mode approach is used in conjunction with rigorous coupled-wave analysis. A quantitative theoretical study of the effect of index modulation, waveguide index, and grating thickness on the wavelength bandpass of a WVGC is also presented. The FWHM wavelength bandpasses found for high-efficiency couplers range from 173 to 525 nm. The various Bragg conditions that can be used in designing a WVGC are also presented and compared. The use of the propagation constant of the mode being outcoupled as the incident wave vector in the Bragg condition is shown to produce the highest coupling efficiency.

© 2004 Optical Society of America

OCIS Codes
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings
(090.7330) Holography : Volume gratings
(130.0130) Integrated optics : Integrated optics
(130.0250) Integrated optics : Optoelectronics
(130.3120) Integrated optics : Integrated optics devices

Original Manuscript: February 12, 2004
Revised Manuscript: May 26, 2004
Manuscript Accepted: May 3, 2004
Published: September 20, 2004

Ricardo A. Villalaz, Elias N. Glytsis, Thomas K. Gaylord, and Tsuyoshi Nakai, "Wavelength response of waveguide volume grating couplers for optical interconnects," Appl. Opt. 43, 5162-5167 (2004)

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